JP2009253410A - Surround system for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surround system for buildings which enables a user being in a room to hear sounds in the other rooms with presence. <P>SOLUTION: In the surround system for buildings, sounds in rooms are collected by microphones installed in respective rooms and are output from speakers in rooms other than rooms wherein microphones having had collected the sounds are installed. For example, when a person is in a room, he or she can hear sounds in all other rooms with presence while staying in the room as if no walls were present. A controller can set a first mode and a second mode different in sound signal processing. Consequently, he or she can freely change (select) sounds desirous of being heard by making processing of a sound signal different between the first mode and the second mode in accordance with his or her desire. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a building surround system capable of listening to sounds of other rooms in a house having a plurality of rooms.

2. Description of the Related Art Conventionally, a speaker is installed in a room in order to listen to human voice, television, radio, music, and the like.
JP 2000-83249 A. Japanese Patent Application Laid-Open No. 6-86382. Japanese Patent Application Laid-Open No. 2004-81537.

  For example, Patent Document 1 is an interphone technology that allows conversations between people in different rooms, but the voice and life sounds of the other party are basically transmitted from the speaker of the interphone, and thus lack of realism. . Therefore, it is not possible to tell the other party the sign.

  Patent Documents 2 and 3 are home theater technologies that can create powerful and realistic spaces, but they are tools for transmitting the sound of AV equipment, so they are not a means of transmitting the sound of different rooms. Absent.

  The present invention has been made to solve the above-described problem, and provides a building surround system that allows a user to listen to sounds of other rooms, such as human voices and living sounds, while being in a room. For the purpose.

  The building surround system according to claim 1, comprising: a microphone installed in each of a plurality of rooms; a speaker installed in each of the plurality of rooms; the microphone; and a control device to which the speakers are connected. And the control device sets at least a first mode and a second mode for outputting the collected sound from a speaker in another room different from the room in which the microphone that has collected the sound is installed The first mode is different from the second mode in the processing of the audio signal.

Next, the operation of the building surround system according to claim 1 will be described.
In the building surround system according to claim 1, the sound of each room is collected by a microphone installed in each room, and the collected sound is collected from the room where the microphone that has collected the sound is installed. Are output from speakers in different rooms.

  For example, when there is a person in a room, the person can listen to the sound of all the other rooms with a sense of reality while being in the room, as if there were no walls.

  Further, the control device can set the first mode and the second mode in which the processing of the audio signal is different. Therefore, it is possible to freely change (select) the sound to be heard by making the processing of the audio signal different between the first mode and the second mode according to the desire of the listener.

  Note that a room includes, for example, all spaces where a person can enter, such as a bathroom, a washroom, a toilet, a storage room, an entrance, a hallway, and a staircase in a residence.

  According to a second aspect of the present invention, in the building surround system according to the first aspect, in the first mode, all sounds collected by the microphone are output from speakers in other rooms, and the second This mode is characterized in that a part of the sound selected from the sounds collected from the microphone is output from a speaker in another room.

Next, the operation of the building surround system according to claim 2 will be described.
In the building surround system according to claim 2, when the mode is set to the first mode, a person in the room can hear all the sounds collected by the microphones in the other rooms. .

  On the other hand, when the mode is set to the second mode, the person in the room selects one of the sounds collected from the microphones in the other room from the speaker in the room where the person is present. I can hear the sound of the club.

  According to a third aspect of the present invention, in the building surround system according to the second aspect, a sound output from the speaker in the first mode and a sound output from the speaker in the second mode Is characterized by different frequency bands.

Next, the operation of the building surround system according to claim 3 will be described.
In the building surround system according to the third aspect, the frequency band of the sound heard from the speaker differs between when the first mode is set and when the second mode is set.

  For example, the first mode can be a mode in which an audio signal from a microphone is amplified at a constant rate regardless of the frequency, and the second mode can be a mode in which the amplification factor is changed depending on the frequency. More specifically, the second mode can be a mode in which only the sound in the preset frequency band is output from the speaker, and the sound other than the preset frequency band is not output from the speaker. In this case, it is possible to prevent the speaker from outputting sounds in a frequency range that does not need to be heard or sounds that do not want to be heard.

  According to a fourth aspect of the present invention, there is provided the building surround system according to any one of the first to third aspects, wherein the control device can switch between the normal mode and the warning mode. In the room where the microphone is installed, and the control device sets the equipment in the alert mode when it is determined that the sound detected by the microphone in the first mode is equal to or higher than a preset level. It is characterized by that.

Next, the operation of the building surround system according to claim 4 will be described.
In the building surround system according to the fourth aspect, equipment that can be switched to either the normal mode or the alert mode by the control device is provided in the room in which the microphone is installed.

  When the mode is set to the first mode, the control device sets the equipment to the alert mode when determining that the sound detected by the microphone is equal to or higher than a preset level.

  According to a fifth aspect of the present invention, in the building surround system according to any one of the first to fourth aspects, the speakers installed in the room are respectively arranged on the other room side, and the microphone The sound collected in step 1 is output from the speaker installed in the other room where the sound is collected.

Next, the operation of the building surround system according to claim 5 will be described.
In the building surround system according to claim 5, at least as many speakers as the number of other rooms are installed in the room, but each speaker is installed on the other room side than the center of the room. Yes.

  And the sound collected by the microphone in the other room is output from the speaker installed in the other room where the sound was collected, so that people in the room can easily determine the direction of the room where the sound is coming out. And a higher sense of realism can be obtained.

  According to a sixth aspect of the present invention, in the building surround system according to any one of the first to fifth aspects, the control device individually turns on and off the plurality of microphones and the plurality of speakers. It has a switching means.

Next, the operation of the building surround system according to claim 6 will be described.
In the building surround system according to claim 6, for example, when it is not desired to hear the sound of another room or when it is not desired to transmit the sound of the room to the other room, the plurality of microphones and the plurality of microphones are switched by the switching unit. Can be individually turned on and off.

  A seventh aspect of the present invention is the building surround system according to any one of the first to sixth aspects, wherein the control device presets the sound collected by the microphone. When it is determined that there is a sound having a predetermined frequency, the own mode is set to the second mode.

Next, the operation of the building surround system according to claim 7 will be described.
When it is determined that there is a sound having a preset frequency among the sounds collected by the microphone, the control device sets its own mode to the second mode.

  The invention according to claim 8 is the building surround system according to any one of claims 1 to 7, wherein the control device collects sounds of a person's voice print registered in advance and the microphone. It is characterized by having a registered voice passing filter that allows only the voice of the registered person to pass through by comparison with sound between the microphone and the speaker.

Next, the operation of the building surround system according to claim 8 will be described.
In the building surround system according to claim 8, by registering a human voice print in the control device in advance, the registered voice pass filter compares the pre-registered human voice print with the sound collected by the microphone. Then, only the registered person's voice is allowed to pass through and output from the speaker. For this reason, sounds other than the registered person's voice (here, noise) are removed, and only the registered person's voice is output from the speaker.

  As described above, since the building surround system according to the present invention has the above-described configuration, it has an excellent effect of being able to listen to sounds of other rooms in the building with a sense of reality while in the room.

[First Embodiment]
Hereinafter, a first embodiment of a building to which the building surround system according to the present invention is applied will be described with reference to FIGS.
(Overall structure of the building)

  As shown in FIG. 1, a building 10 according to the present embodiment includes, for example, a first room (such as a dining kitchen) 12 and a second room (such as a living room) 14 on the first floor, A third room 16 and a fourth room 18 are provided on the second floor. In addition, the building 10 includes an entrance, a hallway, a staircase, a bathroom, a washroom, a toilet, and the like, which are not shown.

  First, as shown in FIG. 1, in the building 10 according to this embodiment, a first room 12 is arranged on the right side of the drawing, a second room 14 is arranged on the left side of the drawing, and a third room is placed on the first room 12. A fourth room 18 is arranged on the room 16 and the second room 14.

(First room)
In the first room 12, speakers 20 </ b> A to 20 </ b> C are attached to the wall surface on the second room side. The speaker 20A is disposed below the wall surface, the speaker 20B is disposed in the center in the height direction of the wall surface, and the speaker 20C is disposed near the ceiling.

In the first room 12, speakers 20 </ b> D to 20 </ b> F are attached to the ceiling adjacent to the third room 16.
The speaker 20 </ b> D is disposed near the center of the third room 16, and the speakers 20 </ b> E and 20 </ b> F are disposed near the right end of the third room 16.

  Note that the speakers 20A to 20C are installed on the wall surface on the second room side, for example, as shown in FIG. 2A, arranged in a line in the center in the width direction of the wall, or as shown in FIG. These can be arranged in one row with respect to both sides in the width direction of the wall and in the center in the width direction, and the number of installations and arrangement parts are not limited to these, and the same applies to the speakers D to F installed on the ceiling.

  Furthermore, a microphone 22A for collecting sounds in the first room 12 is installed in the first room 12. For example, the microphone 22A can be arranged at the center of the ceiling of the first room 12, but may be arranged at other sites as long as the sound can be picked up in the room, such as walls and floors. A plurality of microphones 22 </ b> A may be installed in the first room 12.

(Second room)
In the second room 14, speakers 20 </ b> G to 20 </ b> I are attached to the wall surface on the first room side. The speaker 20G is disposed below the wall surface, the speaker 20H is disposed at the center in the height direction of the wall surface, and the speaker 20I is disposed near the ceiling.
In the second room 14, speakers 20 </ b> J and 20 </ b> K are attached to the ceiling adjacent to the fourth room 18. The speaker 20J is disposed near the center of the ceiling, and the speaker 20K is disposed near the left end of the ceiling.

  Further, the second room 14 is provided with a microphone 22B for collecting sounds in the second room 14. For example, the microphone 22B can be arranged on the ceiling of the second room 14, but may be arranged on other parts as long as the sound can be picked up in the room, such as a wall or a floor. A plurality of microphones 22 </ b> B may be installed in the second room 14.

  In the second room 14, as in the first room 12, the number of speakers installed on the wall surface and ceiling and the installation site of the speakers are not limited to these.

(Third room)
In the third room 16, speakers 20L and 20M are attached to the wall surface on the fourth room side. The speaker 20L is disposed below the wall surface, and the speaker 20M is disposed at the center in the height direction of the wall surface. In the third room 16, a speaker 20 </ b> N is attached to the wall surface on the opposite side to the fourth room 18. The speaker 20N is disposed below the wall surface.

  Furthermore, a microphone 22 </ b> C for collecting sounds in the third room 16 is installed in the third room 16. For example, the microphone 22C can be disposed at the center of the ceiling of the third room 16, but may be disposed at other sites such as walls and floors as long as the sound can be picked up in the room. A plurality of microphones 22 </ b> C may be installed in the third room 16.

  Note that, in the third room 16 as well, as in the first room 12, the number of speakers installed on the wall surface and ceiling and the installation site of the speakers are not limited thereto.

(4th room)
In the fourth room 18, speakers 20O and P are attached to the wall surface on the third room side. The speaker 20O is disposed below the wall surface, and the speaker 20P is disposed at the center in the height direction of the wall surface. In the fourth room 18, a speaker 20 </ b> Q is attached to the wall surface opposite to the third room 16. The speaker 20Q is disposed below the wall surface.

  Further, the fourth room 18 is provided with a microphone 22D for collecting sounds in the fourth room 18. For example, the microphone 22D can be disposed at the center of the ceiling of the fourth room 18, but may be disposed at other sites such as walls and floors as long as the sound can be picked up in the room. A plurality of microphones 22 </ b> D may be installed in the fourth room 18.

  Also in the fourth room 18, as in the first room 12, the number of speakers installed on the wall surface or ceiling and the installation site of the speakers are not limited thereto.

(Control device)
As shown in FIG. 3, the microphones 22 </ b> A to D and the speakers 20 </ b> A to Q described above are connected to the control device 24, and the microphones 22 </ b> A to D, the speakers 20 </ b> A to Q and the control device 24 are used in the present embodiment. A building surround system 26 is configured.

  Note that the control device 24 of the present embodiment includes a preamplifier, an audio signal processing circuit such as a bandpass filter and an equalizer, a mixer, a main amplifier, and the like for each speaker.

  An operation panel 28 for performing various settings is connected to the control device 24. The system is turned on / off, each microphone is turned on / off, each speaker is turned on / off, the volume of each speaker is adjusted, the sound signal processing circuit is turned on / off, and various operations are performed. Adjustment and the like can be operated from the operation panel 28.

  By operating the operation panel 28, at least a monitoring mode (first mode of the present invention) and a normal mode (second mode of the present invention) can be set as system modes in the present embodiment.

(Normal mode)
In the normal mode in the present embodiment, an audio signal processing circuit is inserted in the electrical signal path between the microphones 22A to 22D and the speakers 20A to 20Q, and for example, only a signal in a specific frequency band set in advance is passed. Mode. The frequency band can be set by operating the operation panel 28.

(Monitoring mode)
The monitoring mode in the present embodiment is a mode in which electrical signals from the microphones 22A to 22D are amplified with a preset amplification factor (can be set from the operation panel 28) and output from the speaker. Is fixed (for example, a correction such as attenuating a predetermined bass or treble is not performed). That is, in this mode, all sounds collected by the microphone are output from the speaker.

(Action)
Next, the operation of the building surround system 26 of the present embodiment will be described.
For example, the sound of the first room 12 collected by the microphone 22A of the first room 12 can be output from the speakers 20G to I on the first room side in the second room 14, and the third The room 16 can output from the speakers 20N and L on the first room 12 side, and the fourth room 18 outputs from the speaker 20O closest to the first room 12 on the first room 12 side. can do.

  Next, the sound of the second room 14 collected by the microphone 22B of the second room 14 can be output from the speakers 20A to 20C on the second room 14 side of the first room 12, and the second The fourth room 18 can output from the speakers 20O, Q on the second room 14 side, and the third room 16 can output from the speaker 20L closest to the second room 14 on the second room 14 side. can do.

  Next, the sound of the third room 16 collected by the microphone 22C of the third room 16 can be outputted from the speakers 20C to 20F on the third room side in the first room 12, The fourth room 18 can output from the speakers 20O and P on the third room side, and the second room 14 can output from the speaker 20I on the third room 16 side and closest to the third room. be able to.

  In addition, the sound in the fourth room 18 collected by the microphone 22D in the fourth room 18 can be output from the speakers 20L and M on the fourth room 18 side in the third room 16, and The second room 14 can output from the speakers 20I to 20K on the fourth room 18 side, and the first room 12 can output from the speaker 20C closest to the fourth room 18 on the fourth room 18 side. can do.

Thus, since the collected sound is output from the speaker in the direction of the other room where the collected microphone is installed, the direction of the sound source can be known.
The building surround system 26 of the present embodiment has two modes of a normal mode and a monitoring mode, and can be set to one of the modes by the operation panel 28.

(Operation in monitoring mode)
Here, when the mode of the building surround system 26 is set to the monitoring mode, in this embodiment, the sound signal processing circuit is not inserted in the electric signal path, and the sound collected by the microphones is output from each speaker. Since it is output as it is, you can listen to all the sounds of other rooms with a sense of reality, as if there were no walls in the room.

  In addition, the volume of each speaker can be set according to the distance to other rooms, the sound of other rooms far away is low, and the sound of other rooms nearby can be heard loudly, You can see the distance to the sound source and increase the sense of presence.

Note that the control device 24 automatically sets the level of sound output from the speaker according to the distance between the location where the microphone is set and the location where the speaker where the sound of the microphone is output is installed. You can also
Further, the volume of each speaker can be freely set manually according to preference by the operation panel 28.

(Operation in normal mode)
Next, when the mode of the building surround system 26 is set to the normal mode, in this embodiment, the sound signal of the sound collected by the microphone from each speaker is electrically processed by the sound signal processing circuit. Is done.

  In the present embodiment, more specifically, by setting the audio signal to pass through a band pass filter, for example, only the sound in the main frequency range of human voice (for example, 80 to 1100 Hz) is passed. By doing so, mainly human voice can be heard well, and noise (here, sound having a frequency outside the main frequency range of human voice) can be prevented from being heard.

  As a measure of the voice range, in the case of men, the bus is 80 to 300 Hz, the baritone is 110 to 390 Hz, the tenor is 150 to 470 Hz, and in the case of women, the alto is 200 to 700 Hz and the soprano is 260 to 1100 Hz. For example, when it is desired to hear a voice of a father whose voice is low mainly in another room, the band pass filter characteristic may be set so that only a sound of 80 to 300 Hz is output.

  In addition, it is preferable that each microphone 22A-D has a frequency characteristic which can collect the sound of the frequency of a human audible range, for example, frequency 20-20000Hz.

  On the other hand, it is preferable that the speakers 20A to 20Q can output at least all sounds in a human audible range (for example, a frequency of 20 to 20000 Hz). However, if the speakers 20A to Q have frequency characteristics capable of outputting sounds in a desired frequency band. good.

  According to the building surround system 26 of the present embodiment, the sound of another room can be heard from the speaker, and therefore, for example, the following effects can be obtained.

(1) You can have a natural conversation with a family in another room (you can create a situation where there is no partition).
(2) Can notice abnormalities of care recipients at an early stage.
(3) Because it becomes easy to feel the family's feelings, communication between family members becomes close.

(4) Since it is possible to feel the sound and sign when another person invades, the house can be made resistant to crime.
(5) Since the sound of other rooms can be heard from the speakers, the background noise becomes high and external noise from outside the building does not matter.
(6) By connecting a device that outputs audio signals to the external audio input terminal, music can be played throughout the house.

  Note that the building surround system 26 may be provided with a plurality of external audio signal input terminals 30 in the control device 24 as shown in FIG. For example, a TV, stereo, video, computer, interphone installed at the entrance, telephone, etc. can be connected to the external audio signal input terminal 30. An input signal is selected on the operation panel 28. It is possible to do. Further, the control device 24 can select which speaker the electric signal from the device connected to the external audio signal input terminal 30 is distributed to on the operation panel 28. For example, as shown in FIG. 2B, when the speakers 20A to 20C are arranged on the wall surface and the television 32 is arranged at the center of the wall surface, the sound of the television 32 is heard in stereo or surround using the speakers in the room. You can also.

  In addition, as shown in FIG. 3, the control device 24 may be provided with a communication device connection terminal 34 that can connect, for example, a telephone line or an Internet line. By connecting a telephone line or Internet line to the communication device connection terminal 34, it is possible to operate the building surround system 26 from the outside, such as system on / off and mode switching, using an external telephone or personal computer. Become.

  In the present embodiment, the normal mode and the monitoring mode are switched by the operation panel 28, but the mode can be automatically changed.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the building surround system 26 of this embodiment, one or more emergency buttons (not shown) are connected to the control device 24. In addition, an electric lock (not shown) that can be locked and unlocked by an electric signal is attached to the door of each room, and the operation of each electric lock is controlled by the control device 24. . The electric lock in the present embodiment corresponds to the equipment of the present invention, the locking corresponds to the warning mode of the equipment of the present invention, and the unlocking corresponds to the normal mode of the equipment of the present invention.

  For example, when a glass is broken or a suspicious person intrudes in any room, the sound of the broken glass and the footsteps of the intruder are collected. The sound of the glass being collected and the footsteps of the intruder flow from the speakers in each other room.

  When the resident detects the broken sound or footsteps of the glass flowing from the speaker as a suspicious sound, he presses an emergency button connected to the control device 24. As a result, the electric lock is switched from the normal mode to the alert mode, and the doors of the rooms are locked (locked). In addition, when switching to the warning mode, it is also possible to report to a security company or the like via a communication line such as a telephone line or the Internet. In addition, by reporting to the security company, the security company can dispatch the security staff to the scene.

When the control device 24 is switched to the alert mode, it is also possible to continuously play, for example, “Intruder” voice that has been registered in advance from each speaker.
In addition, when a resident shouts, for example, “Drobo” from a locked room, the screaming “Drobo” is collected by the microphone, and the screaming “Drobo” flows from the speaker. Can also be dissipated.

  The control device 24 can also have a voice recognition function. When a keyword is registered in the control device 24 in advance and the control device 24 senses that a keyword has been collected from any microphone, the control device 24 automatically switches from the normal mode to the warning mode. Can also be switched.

  The keyword can be registered in the control device 24 in advance by, for example, the resident uttering the keyword to the microphone. Even if there is an intruder in the immediate vicinity, avoid words that stimulate the intruder, such as `` Drobo, '' and set words that do not get confused as keywords. Without changing to the alert mode.

  The device is not limited to an electric lock. For example, the device may be a surveillance video camera, a siren, an alarm lamp, or the like.

[Other Embodiments]
(1) The control device 24 can perform various settings in each mode.
For example, the sound pressure level at the position of the microphone can be set so as to output only sound with a predetermined value or more from the speaker. It can be used when you want to convey a voice calling to a family member in another room, but you do not want the voice spoken on the phone to be heard in another room. For example, a sound with a sound pressure level of 60 dB or higher at the microphone position Is set to output from the speaker and sound less than 60 dB is not output from the speaker, so that a relatively small voice, for example, a voice speaking on the phone, is not output from the speaker, and a relatively loud voice, for example, to a family Calls can be output from the speaker.

(2) On the contrary, a limiter may be provided in the control device 24 so that a sound having a sound pressure level or higher set in advance is not output from the speaker.

(3) By setting the control device 24 so that only a pre-registered person's voice (for example, a family voiceprint) can be output from the speaker, a sound other than the pre-registered person's voice (here Then, it is possible to prevent the extra noise) from being heard from the speaker. For example, by registering voices of infants and care recipients, voices of infants and care recipients can be easily transmitted to the family.

  The sound collected from the microphone contains both human voice and ambient noise. However, the control device 24 capable of this kind of operation uses a noise component from the sound signal obtained from the microphone. A speech extraction circuit (registered speech pass filter of the present invention) that can be removed may be provided. As voice extraction circuit, voice print analysis circuit for analyzing human voice, voice print memory for storing voice print analyzed by voice print analysis circuit, comparison for extracting human voice compared with voice print storing voice signal from microphone It is sufficient if a filter or the like is provided.

  As an operation, first, a voiceprint of a person who wants to register is registered. The voice of the person who wants to register is collected by one of the microphones, and the sound signal from the microphone is input to the voiceprint analysis circuit of the voice extraction circuit. The voiceprint analysis circuit analyzes the voiceprint of the collected person and stores the result in the voiceprint memory. After the completion of voiceprint registration, the human voice and ambient noise are collected by the microphone, and these sound signals are input to the comparison filter of the voice extraction circuit. The voiceprint information of the person registered from the voiceprint memory is stored in the comparison filter as needed. From this information, only the voice of the registered person is extracted from the signal input from the microphone and output to the speaker.

  As a result, only the registered person's voice is output from the speaker with the ambient noise removed, making it easier to hear the person's voice.

(4) On the contrary, by setting the control device 24 so that the voice of the person registered in advance is not output from the speaker, the voice of the person registered in advance is not heard. You can also For example, by registering the voice of a child, it can be set so that the voice of the child is not heard.
(5) The family voice may be registered in the control device 24, and settings may be made so that sounds other than the family voice are not output from the speaker. As a result, the voice of the family can be transmitted but other noises can be prevented.

(6) The frequency of the walking sound in the building (for example, 63 Hz or less) is registered in advance in the control device 24, and the sound in the pre-registered frequency range is preset in the control device 24 in the monitoring mode. When the control device 24 determines that the level is equal to or higher than the predetermined level, it can be determined that the intruder is walking in the building, and the intruder can be detected from the sound in the room.
When an intruder is detected in this way, a device such as an electric lock can be automatically switched to a warning mode without pressing an emergency button or speaking a keyword.

(7) The frequency of the falling sound (for example, 125 Hz or less) when a person falls in the building is registered in the control device 24 in advance, and the sound in the pre-registered frequency range is set in the control device 24 in advance. If the control device 24 determines that the level is equal to or higher than the predetermined level, a warning sound set in advance in the control device 24 is output from the speaker. The family can rush to the care recipient.

(8) Since walking sound and falling sound are transmitted through the air in the air and enter the microphone, a small walking sound may not be picked up by the microphone. In such a case, if a vibration detection sensor having the same structure as that of the microphone is directly attached to the floor and the vibration detection sensor is connected to the control device 24, it is possible to detect walking sounds and falling sounds with high sensitivity. .

(9) In addition to the footsteps, the frequency range such as the sound of glass breaking and the sound of trying to unlock the door is registered in the control device 24 in advance, and the sound in the pre-registered frequency range is stored in the control device in advance. When the control device 24 determines that the level is equal to or higher than the level set in 24, it can be determined that the glass is broken or the door is being unlocked. The mode can be switched from the normal mode to the alert mode, or a security company can be notified.

(10) It is possible to incorporate a clock or timer in the control device 24 and switch the system mode at a preset time. Thereby, for example, the system can be automatically set to the normal mode at daytime and the monitoring mode at night.

(11) An infrared sensor that detects infrared rays emitted from the human body is provided in each room, and when the infrared sensor detects infrared rays emitted from the human body, the system mode is changed to a warning mode or a warning is issued. It is also possible to do. For example, if you turn off infrared sensor detection in a sleeping room and turn on infrared sensor detection in a room without people, you can detect intruders in rooms without people. The sound of the intruder can be felt by the sound heard from the speaker.

(12) In the above embodiment, the system has set the two modes of the normal mode and the monitoring mode. However, other modes with different electrical signal processing may be further set.
In the above embodiment, the monitoring mode is a mode in which the electrical signals from the microphones 22A to 22D are amplified at a preset amplification factor and output from the speaker, and the amplification factor is constant regardless of the frequency. It is sufficient that the processing of electrical signals is different at least for other modes, and processing of electrical signals that do not produce sound in some frequency ranges is performed, or sound is output from speakers according to preset settings. May be. That is, in all modes, an audio signal processing circuit may be interposed between the microphone and the speaker.

(13) When a pre-registered sound is detected, the control device 24 may be set to contact a pre-registered phone or personal computer, etc., or from the outside using a mobile phone, personal computer or the like. You may set so that it can connect with the control apparatus 24. FIG.
As a result, it is possible to know the abnormality of the absence home with a mobile phone, a personal computer, etc., and to hear the sound of the absence home. In addition, when you leave your family, you can listen to the situation inside the house from a mobile phone or PC.

(14) In the above embodiment, a plurality of speakers are installed in one room. However, in the present invention, it is sufficient that at least one speaker is installed in the room.

(15) In the above embodiment, an example in which a microphone and a speaker are arranged in each of the first room 12, the second room 14, the third room 16, and the fourth room 18 is shown. Although steps, a bathroom, a washroom, a toilet, etc. are not described, a microphone and a speaker may be provided as necessary in the same manner as in the first room 12 to the fourth room 18.

It is a schematic block diagram of the building to which the building surround system of the present invention is applied. (A) is an example of a layout when a plurality of speakers are installed on the wall surface, and (B) is an example of another layout when a plurality of speakers are installed on the wall surface. It is a block diagram which shows schematic structure of the surround system for buildings of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Building 12 First room 14 Second room 16 Third room 18 Fourth room 20A Speaker 20B Speaker 20C Speaker 20D Speaker 20E Speaker 20F Speaker 20G Speaker 20H Speaker 20I Speaker 20J Speaker 20K Speaker 20L Speaker 20M Speaker 20M Speaker 20O speaker 20P speaker 20Q speaker 22A microphone 22B microphone 22C microphone 22D microphone 24 control device 26 surround system for building 28 operation panel (switching means)
30 External audio signal input terminal

Claims (8)

Microphones installed in multiple rooms;
A speaker installed in each of the plurality of rooms;
A control device to which the microphone and the speaker are connected,
The control device can set at least a first mode and a second mode for outputting the collected sound from a speaker in another room different from the room in which the microphone that has collected the sound is installed. And
The building surround system according to claim 1, wherein the first mode and the second mode are different in processing of an audio signal. In the first mode, all sounds collected by the microphone are output from speakers in other rooms,
2. The building surround system according to claim 1, wherein in the second mode, a part of the sound selected from the sounds collected from the microphone is output from a speaker in another room.   The building surround according to claim 2, wherein the sound output from the speaker in the first mode and the sound output from the speaker in the second mode have different frequency bands. system Provided in the room where the microphone is installed with equipment that can be switched to either the normal mode and the alert mode by the control device,
The said control apparatus sets the said equipment to alert mode, when it is judged that the sound detected with the said microphone in the said 1st mode is more than the preset level. Item 4. The building surround system according to any one of item 3. Place the speakers installed in the room on the other room side,
The building surround system according to any one of claims 1 to 4, wherein the sound collected by the microphone is output from the speaker installed on the other room side where the sound is collected. .   The building surround system according to any one of claims 1 to 5, wherein the control device includes a switching unit that individually turns on and off the plurality of microphones and the plurality of speakers.   The control device sets its own mode to the second mode when it is determined that there is a sound having a preset frequency among the sounds collected by the microphone. The building surround system according to any one of claims 1 to 6.   The control device has a registered voice passing filter between the microphone and the speaker that allows only the voice of the registered person to pass through by comparing the voice print of the person registered in advance with the sound collected by the microphone. The building surround system according to claim 1, wherein the building surround system is a building surround system.

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